MATLAB-if ... else ... end statements

MATLAB Conditional Statements

An optional else statement can follow the if statement, which is executed when the expression is false.

Syntax

The syntax of if ... else statements in MATLAB is-

if <expression>
　　　%If the boolean expression is true, execute the following statement
　　　<statement(s)>
else
　　　<statement(s)>
　　　%If the boolean expression is false, execute the following statement
end

If the calculated result of the boolean expression is true, the if code block will be executed, otherwise the else code block will be executed.

Flowchart

Online Example

Create a script file and enter the following code-

a =　100;
%Check Boolean Condition
　　　if a <　20　
　　　　　　%If condition is true, print the following content
　　　　　　fprintf('a is less than　20\n');
　　　else
　　　　　　%If condition is false, print the following content
　　　　　　fprintf('a is not less than　20\n');
　　　end
　　　fprintf('The value of a is: %d\n', a);

a is not less than　20
The value of a is:　100

MATLAB Conditional Statements